Relicense nearly everything to Apache 2.0.

3 files changed, 221 insertions, 511 deletions

diff --git a/doc/apache-2.0.texi b/doc/apache-2.0.texi
new file mode 100644
index 0000000..5866709
--- /dev/null
+++ b/doc/apache-2.0.texi
@@ -0,0 +1,214 @@
+         Apache License
+
+   Version 2.0, January 2004
+
+@uref{http://www.apache.org/licenses/}
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+@enumerate
+@item
+Definitions.
+
+``License'' shall mean the terms and conditions for use, reproduction,
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+``You'' (or ``Your'') shall mean an individual or Legal Entity
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+@item
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+unless required by applicable law (such as deliberate and grossly
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+defend, and hold each Contributor harmless for any liability
+incurred by, or claims asserted against, such Contributor by reason
+of your accepting any such warranty or additional liability.
+@end enumerate
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following
+boilerplate notice, with the fields enclosed by brackets ``[]''
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+Licensed under the Apache License, Version 2.0 (the ``License'');
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+@uref{http://www.apache.org/licenses/LICENSE-2.0}
+
+Unless required by applicable law or agreed to in writing, software
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diff --git a/doc/chickadee.texi b/doc/chickadee.texi
index f246cfb..7c7e469 100644
--- a/doc/chickadee.texi
+++ b/doc/chickadee.texi
@@ -4,7 +4,7 @@
 @settitle The Chickadee Game Toolkit
 @c %**end of header
 @copying
-Copyright @copyright{} 2017-2021  David Thompson @email{dthompson2@@worcester.edu}
+Copyright @copyright{} 2017-2023  David Thompson @email{dthompson2@@worcester.edu}
 
 @quotation
 Permission is granted to copy, distribute and/or modify this document
@@ -55,7 +55,7 @@ The document was typeset with
 * Command Line Interface::      Run Chickadee programs from the terminal.
 * Live Coding::                 Tips for building games from the REPL.
 * API Reference::               Chickadee API reference.
-* Copying This Manual::         The GNU Free Documentation License and you!
+* Copying This Manual::
 * Index::
 @end menu
 
@@ -492,13 +492,14 @@ Guile.  Use @code{M-x connect-to-guile} to connect to the REPL server.
 @appendix Copying This Manual
 
 @menu
-* GNU Free Documentation License::  License for copying this manual.
+* Apache 2.0 License::  License for copying this manual.
 @end menu
 
 @c Get fdl.texi from http://www.gnu.org/licenses/fdl.html
-@node GNU Free Documentation License
-@section GNU Free Documentation License
-@include fdl.texi
+@node Apache 2.0 License
+@section Apache 2.0 License
+
+@include apache-2.0.texi
 
 @node Index
 @unnumbered Index
diff --git a/doc/fdl.texi b/doc/fdl.texi
deleted file mode 100644
index 9c3bbe5..0000000
--- a/doc/fdl.texi
+++ /dev/null
@@ -1,505 +0,0 @@
-@c The GNU Free Documentation License.
-@center Version 1.3, 3 November 2008
-
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-the translation and the original version of this License or a notice
-or disclaimer, the original version will prevail.
-
-If a section in the Document is Entitled ``Acknowledgements'',
-``Dedications'', or ``History'', the requirement (section 4) to Preserve
-its Title (section 1) will typically require changing the actual
-title.
-
-@item
-TERMINATION
-
-You may not copy, modify, sublicense, or distribute the Document
-except as expressly provided under this License.  Any attempt
-otherwise to copy, modify, sublicense, or distribute it is void, and
-will automatically terminate your rights under this License.
-
-However, if you cease all violation of this License, then your license
-from a particular copyright holder is reinstated (a) provisionally,
-unless and until the copyright holder explicitly and finally
-terminates your license, and (b) permanently, if the copyright holder
-fails to notify you of the violation by some reasonable means prior to
-60 days after the cessation.
-
-Moreover, your license from a particular copyright holder is
-reinstated permanently if the copyright holder notifies you of the
-violation by some reasonable means, this is the first time you have
-received notice of violation of this License (for any work) from that
-copyright holder, and you cure the violation prior to 30 days after
-your receipt of the notice.
-
-Termination of your rights under this section does not terminate the
-licenses of parties who have received copies or rights from you under
-this License.  If your rights have been terminated and not permanently
-reinstated, receipt of a copy of some or all of the same material does
-not give you any rights to use it.
-
-@item
-FUTURE REVISIONS OF THIS LICENSE
-
-The Free Software Foundation may publish new, revised versions
-of the GNU Free Documentation License from time to time.  Such new
-versions will be similar in spirit to the present version, but may
-differ in detail to address new problems or concerns.  See
-@uref{http://www.gnu.org/copyleft/}.
-
-Each version of the License is given a distinguishing version number.
-If the Document specifies that a particular numbered version of this
-License ``or any later version'' applies to it, you have the option of
-following the terms and conditions either of that specified version or
-of any later version that has been published (not as a draft) by the
-Free Software Foundation.  If the Document does not specify a version
-number of this License, you may choose any version ever published (not
-as a draft) by the Free Software Foundation.  If the Document
-specifies that a proxy can decide which future versions of this
-License can be used, that proxy's public statement of acceptance of a
-version permanently authorizes you to choose that version for the
-Document.
-
-@item
-RELICENSING
-
-``Massive Multiauthor Collaboration Site'' (or ``MMC Site'') means any
-World Wide Web server that publishes copyrightable works and also
-provides prominent facilities for anybody to edit those works.  A
-public wiki that anybody can edit is an example of such a server.  A
-``Massive Multiauthor Collaboration'' (or ``MMC'') contained in the
-site means any set of copyrightable works thus published on the MMC
-site.
-
-``CC-BY-SA'' means the Creative Commons Attribution-Share Alike 3.0
-license published by Creative Commons Corporation, a not-for-profit
-corporation with a principal place of business in San Francisco,
-California, as well as future copyleft versions of that license
-published by that same organization.
-
-``Incorporate'' means to publish or republish a Document, in whole or
-in part, as part of another Document.
-
-An MMC is ``eligible for relicensing'' if it is licensed under this
-License, and if all works that were first published under this License
-somewhere other than this MMC, and subsequently incorporated in whole
-or in part into the MMC, (1) had no cover texts or invariant sections,
-and (2) were thus incorporated prior to November 1, 2008.
-
-The operator of an MMC Site may republish an MMC contained in the site
-under CC-BY-SA on the same site at any time before August 1, 2009,
-provided the MMC is eligible for relicensing.
-
-@end enumerate
-
-@page
-@heading ADDENDUM: How to use this License for your documents
-
-To use this License in a document you have written, include a copy of
-the License in the document and put the following copyright and
-license notices just after the title page:
-
-@smallexample
-@group
-  Copyright (C)  @var{year}  @var{your name}.
-  Permission is granted to copy, distribute and/or modify this document
-  under the terms of the GNU Free Documentation License, Version 1.3
-  or any later version published by the Free Software Foundation;
-  with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
-  Texts.  A copy of the license is included in the section entitled ``GNU
-  Free Documentation License''.
-@end group
-@end smallexample
-
-If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
-replace the ``with@dots{}Texts.''@: line with this:
-
-@smallexample
-@group
-    with the Invariant Sections being @var{list their titles}, with
-    the Front-Cover Texts being @var{list}, and with the Back-Cover Texts
-    being @var{list}.
-@end group
-@end smallexample
-
-If you have Invariant Sections without Cover Texts, or some other
-combination of the three, merge those two alternatives to suit the
-situation.
-
-If your document contains nontrivial examples of program code, we
-recommend releasing these examples in parallel under your choice of
-free software license, such as the GNU General Public License,
-to permit their use in free software.
-
-@c Local Variables:
-@c ispell-local-pdict: "ispell-dict"
-@c End: